Here is the problem. We are evaluating VTAPE from VSSI. Our VSE machines get Intervention Required when EOT is sensed when running an IDCAMS backup.
I am want to organize a trace to a real 3490 tape drive so I can see the behavior when a real 3490 presents EOT to IDCAMS. Then I want to do the same thing using a Virtual tape drive and compare the tape commands and interrupts. If we cannot get beyond this problem with VTAPE, we won't be able to buy the product. The vendor isn't offering much in the way of support so I'm trying to get ahead of the game and give the vendor as much information about the nature of the problem as possible. If you are telling me that I won't see any interrupts or commands using TRSOUCE except for a few xSCH commands, then I am on a fool's errand. Since you know what I am trying to do, perhaps you can recommend a better method. Suggestions welcomed. ____________________ Jim Hughes 603-271-5586 "It is fun to do the impossible." ==>-----Original Message----- ==>From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On ==>Behalf Of Alan Altmark ==>Sent: Wednesday, June 17, 2009 2:25 PM ==>To: IBMVM@LISTSERV.UARK.EDU ==>Subject: Re: Trace I/O for a 3490 tape drive ==> ==>On Wednesday, 06/17/2009 at 12:58 EDT, "Hughes, Jim" ==><jim.hug...@doit.nh.gov> wrote: ==>> I?d like to trace all i/o, interrupts, etc for a 3490 tape drive. ==>... ==>> My trace command is: ==>> CP TRACE IO 181 CCW INS INT BOTH RUN ==>> ==>> I?ve used various other combinations of TRACE SIO and TRACE SSSCH and ==>etc? ==>> with no happiness. ==>> ==>> I can get the TSCH and SSCH commands to appear and nothing else. ==>> ==>> What can I do to get ALL the tape i/o for address 181 to show up? ==> ==>What other I/O were you expecting? If the guest is in a TSCH loop, it ==>typically won't get I/O interrupts. They will be drained by the TSCH. ==> ==>Alan Altmark ==>z/VM Development ==>IBM Endicott
